These dye mixtures are also known as near infrared cut-on filters or long wavelength band pass filters.
They are designed to block UV and visible light while transmitting NIR light
The Epolight™ 7527 dye series are available as dye powders or as formulated coatings.
Listed below are the transmission properties of each dye in the series.
| Dye powders | ||
|
Epolight™ |
blocks, nm |
* transmits, nm |
|
7527A |
200 to 675 |
> 835 |
|
7527B |
200 to 695 |
> 850 |
|
7527C |
200 to 835 |
> 900 |
|
7527D |
200 to 875 |
> 950 |
|
7527E |
200 to 920 |
> 985 |
|
7527F |
200 to 975 |
> 1035 |
|
7527G |
200 to 1065 |
> 1185 |
* This is the wavelength where transmission is 70%
